Calw-Altburg, Germany · Saturday, July 10, 2027

Fixed Distance 100K

e2h10k-100km

245 days away

100 km Distance

370 m Climbing

5.6 Grit · Challenging

48.7142° N, 8.7403° E© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 4 m / km Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.

Time limit 20 hours 12:00 min/km average. Generous. Walkable throughout for most of the field. More forgiving than 69% of 100K races. Measured against 233 races of the same distance. Cut-off calculator →

Field size ~5 Tiny. You will run alone for most of it.

DUV results for the 2025 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, July

Daytime high 24°C

Night low 13°C

Rainfall Showers likely

Daylight 15 h 56 m of light

Regional 2001-2025 average for July — NASA POWER, grid elevation 556 m. Not a forecast.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a fast & flat course. Expect fast, runnable sections where rhythm is key.

By UltraHub Expert

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

🥤 nutrition

For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

By UltraHub Expert

Gear for this race

Chosen for 100 km of trail with 370 m of ascent.

Trail Running Shoes100 km of trail — cushioning that is still there in the last quarter.
Race NutritionPast 100 km the palate quits before the legs do — carry more than one flavour.
Hydration VestsFlask capacity for 100 km, without the bounce.
HeadlampsA 20 h limit puts you out there after dark.
AccessoriesChafe and blisters end more 100 km races than fitness does.

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Salomon